Novel Digital Microfluidic System Using a Surface Acoustic Wave Device

被引：3
|
作者：
Sugita, Takaaki [1 ]
Kondoh, Jun [2 ]
机构：
[1] Shizuoka Univ, Grad Sch Engn, Hamamatsu, Shizuoka 4328561, Japan
[2] Univ Shizuoka, Grad Sch Sci & Technol, Hamamatsu, Shizuoka, Japan
来源：
2010 IEEE SENSORS | 2010年
基金：
日本科学技术振兴机构;
关键词：
SAW; DROPLETS;
D O I：
10.1109/ICSENS.2010.5689845
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A droplet manipulation is one application of a surface acoustic wave (SAW) device. In this paper, a novel digital microfluidic system using SAW device is described. The system which is called micro-laboratory consists of sensor plate/matching layer/ piezoelectric substrate. The piezoelectric substrate is used for generating the SAW. At the piezoelectric substrate and matching layer interface, the SAW radiates a longitudinal wave into the layer. When the longitudinal wave reflects at the sensor plate and matching layer interface, a bulk acoustic wave (BAW) is generated into the plate. The BAW is used to manipulate a droplet on the sensor plate. For detecting droplet characteristics, an interdigital electrode (IDE) is fabricated on the sensor plate. Using the IDE, impedance change due to a urease catalytic reaction is measured. The results indicate that the proposed system is able to use a detector of urea concentration.
引用
收藏
页码：253 / 256
页数：4
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